Washington does not have an inheritance tax. Washington does have an estate tax.
During a general election in November 1981, the voters repealed an inheritance tax and enacted an estate tax. The change from an inheritance tax to an estate tax became effective January 1, 1982. Due to this change, Washington no longer has an inheritance tax waiver.
In general terms, an inheritance tax is a tax on the beneficiaries of an estate whereas an estate tax is a tax on the decedent’s estate.
If you are a person living in Washington who inherits property or money, you do not owe Washington taxes on your inheritance.